BY448 , BY458
www.vishay.com
Vishay Semiconductors
Rev. 1.8, 27-Aug-12
1
Document Number: 86006
For technical questions within your region: DiodesAmericas@vishay.com
, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Standard Avalanche Sinterglass Diode
MECHANICAL DATA
Case: SOD-57
Terminals: plated axial leads, solderable per MIL-STD-750,
method 2026
Polarity: color band denotes cathode end
Mounting position: any
Weight: approx. 369 mg
FEATURES
• Glass passivated junction
• Hermetically sealed package
• Material categorization:
For definitions of compliance please see
www.vishay.com/doc?99912
APPLICATIONS
• High voltage rectification
• Efficiency diode in horizontal deflection circuits
ORDERING INFORMATION (Example)
DEVICE NAME ORDERING CODE TAPED UNITS MINIMUM ORDER QUANTITY
BY458 BY458TR 5000 per 10" tape and reel 25 000
BY458 BY458TAP 5000 per ammopack 25 000
PARTS TABLE
PART TYPE DIFFERENTIATION PACKAGE
BY448 V
R
= 1500 V, I
FAV
= 2 A SOD-57
BY458 V
R
= 1200 V, I
FAV
= 2 A SOD-57
ABSOLUTE MAXIMUM RATINGS (T
amb
= 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION PART SYMBOL VALUE UNIT
Reverse voltage See electrical characteristics
BY448 V
R
= V
RRM
1500 V
BY458 V
R
= V
RRM
1200 V
Peak forward surge current t
p
= 10 ms, half sine wave I
FSM
30 A
Average forward current I
FAV
2A
Junction temperature T
j
140 °C
Storage temperature range T
stg
- 55 to + 175 °C
Non repetitive reverse avalanche energy l
(BR)R
= 0.4 A E
R
10 mJ
MAXIMUM THERMAL RESISTANCE (T
amb
= 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
Junction ambient
l = 10 mm, T
L
= constant R
thJA
45 K/W
On PC board with spacing 25 mm R
thJA
100 K/W
